Scraper.



H. B. SARMAN.

somma. APPLICATION FILED JAN. 27, 1913.'

Lnlll 'Ill lllllllIlll o o oo untreu STATES PATE HENRY i3. SAUERMAN, or CHICAGO, ILLINOIS.

SCRAPER.

Specification of Letters Patent.

Application filed January 27, 1913. Serial No. 744,358.

The principal object of the invention is to t provide new and improved apparatus by means of'which the desired result may be accomplished in a more rapid and efficient manner.

.;- A furtlierobject of the invention isfto provide a new and improved 'form of scraper bucket which is particularly adapted to be 'moved to and fro over a surface to loe scraped, and which, when so moved, will -engage the surface to be scraped in one direction of movement and will slide easily over the `surface in the other direction of movement.

A further object of the invention is to provide a new and improved forni of scraper bucket whit" may be readily adapted for use with materials of different. characters, by adjusting the depth of cut of the scraper blade, and for producing a simple and strong device et this class which is effective and efficient in operation.

For the attainment of these ends and the accomplishment of other new and useful objects', as will appear, the invention consists lin the features of novelty in -the, construction, combination, and arrangement'of the several parts generally shown in the accompanying` Idrawings and described in the specification, but more particularly pointed c ,out 'in the 'appended claims.

in a depression.

In the drawings -Figure 1 is a representation of a scraper of the class described adapted to be moved forward and back over the surface to be scraped for making a fill Fig. 2 is aside elevation Aof a scraper bucket of the preferredform With'the scraper-blade in position for the f of construction with the scrape;` blade' in raised position for forward movement thereof.- Fig. 8 is a side elevation of the same rearward movement of the bucket. Fig. 4 is a plan view of the bucket. Fig. 5 is a sectional view taken on the line 5 5 of Fig. 4. Fig. (3 is a view of the bucket. adapted for to be scraped Without necessitating Jfrequentv turnings as is common with horse-drawn buckets and the like, and also'with the mini-v mum of resistance for the backward moveJ ment of the scraper bucket.

The preferred method of use of this device is illustrated diagrammatically by Fig. 1, iii which a scraper bucket designated generally by the reference numeral 10'is drawn to and .tro overa surface 11 by means of 'fiexible cables 12 which pass over pulleys 13 and 14 disposed beyond the extremities of the desired length-of travel of the scraper bucket. and moved by means of an engine 15 having' driving connection with the cables 12 and adapted to make a lill in the depression 1G.

ln construction the scraper bucket preferably comprises side plates 17 spaced apart at their forward end by means of a strip 18 secured to the forward edges thereof and extending above the 'plates to space them apart. and a plate 19 secured to the rear end of the side plates 17 and secured thereto by means of the angle braces 20. .\n inside bracing-strip 21 and an outer bracing,` strip 22 aie preferably secured to the edge oil Ithe plates 17 at the lower edge thereof, the outside strips 22 preferably projecting beyond the rear of the bucket or scraper receptacle and provided with perforations in the projecting portion, and also secured to the outside lower edge of the receptacle and eX- tending rearwardly therefrom are pert'o-. rated strips 23 slightly spacedl from the sides Aof the receptacle bymeans of blocks 24, the perforations in these strips 23 and the side strips 22 registering with each. other. E tending overvthe plates 17 at the 'rear end thereof is a strip 25|iipon' which is mounted a pulley 2ttot'any desired or suitable con- Patented Feb. 17, 1914.

rearward end, to the bottom of which the runners 28 are connected, and also curved slightly at their rearward end. Connecting the several strips 27 is a. rear plate 29, a fin-.vaifd cutting plate 30 and a plate 31 bent upwardly at the ends, the ends being adapted to be inserted between the rearward extensions of the perforated strips 2Q and 23 and having a plurality of perforations 32 therein. A pivot ,pin or bolt is inserted through the perforations in said strips and the upwardly extending ends of the plate 31 to form a pivotal connection for the scraper blade and the plurality ofperforations 32 is provided so that the depth of out of the scraper blade may be varied to accommodate the scraper bucket to different materials.

i In order to limit the movement of the scraper blade in an upward direction with respect to the scraper receptacle, and there` by to vary the depth of cut for any fixed position of the blade, an adjustable stop device is provided comprising a slotted bar preferably curved at the lower end 35 which is adjustably secured to the rear plate 19 of -the receptacle by means of a fastening device 3G. lWhen the scraper receptacle is drawn in a forward direction the scraper blade will contact with the lower extremity of the stop 34, limiting the movement of the blade in that direction and varying the depth of cut thereof to a predetermined extent.

In order to draw the scraper receptacle to and fro it is provided at its forward end, with fastening device 37 preferably consisting of U hooks connected through the strips 18 at a slight distance above the lower edge of the plates 17 to which a chain or Iiexiblc member 38l is connected, and at the rear with fastening device 39 preferably secured at the sides of the rear plate 29 to which flexible members 40 are connected. Also connectedlto the scraper blade,preferably at the center thereof and at the rear extremity, is a iexible member or chain 41 connected to the flexible member 38 which extends upwardly over-the pulley 26 and has a claw hook 42 at its free .end by means of which the pulling length of the chain may be varied. yConnected to the forward chain 38 and the chain 41 is one end of a flexible cable 12, previously referred to, while connected tt; the chains 40 at the rear of the scraper blade is the end of another cable l2. It is obvious, therefore, that the movement of the cables l2 in'both directions will cause a corresponding movement of the scraper bucketas previously set forth. It will also be noted that the exible member 38, which is connected to the forward end of the receptacle, and the tioxible member 41, which is connected to the rear of the scraper blade,

are so disposed with respect to each other Lhat the flexible member 41 must be drawn tight, as shown in Fig. 2, during the forward movement of the receptacle before the flexible memberBS will be drawn tight. In other words, the scraper blade will be elevated in the position shown before the receptacle will be drawn forwardly. ln the other direction of movement, as shown by Fig. 3, the scraper blade will be drawn rearwardly so that the rear end of the scraper receptacle will rest upon the runners 2S,'and the forward flexible member 38 will be slack.

i Itis obvious that instead of having a tlexible cable 12 extending over two pulleys, a device may be provide at each end of travel of the bucket for moving it in the corre spending direction.

If desired, the flexible member 41 may be dispensed with, in which case a construction, as illustrated by Fig. 6, may beemploycd. The pulley 26 is dispensed with and a flexi- 8D ble member 41 forms connection between the rear of the scraper blade and the hook 26. rlhe sto device 34 may be omitted also, if desire What 'I claim is: y n

1. ln a scraper bucket of the class de scribed, the combination with a receptacle, of a scraper bladepivotally connected intermediate its ends at the rear of the receptacle with the cuttingl edge of the blade ex- 915 tending below the bottom of the receptacle at the rear, and an adjustable stop secured to the receptacle adapted to engage the.

' scraper blade for predeterxnining the extent of rotation and the inclination of thc blade and the depth of cut to be made thereby.

2.' ln a scraper bueket,the combination with a scraper receptacle of a scraper blade pivotally connected thereto at the rear of the receptacle, and runners on the bottom of the blade curved upwardly at the rear thereof whereby the bucket may be drawn rearwardly upon the said runners.

8. A scraper bucket of the class described comprising a scraper receptacle, a scraper im blade having lateral projections at the ende thereof with a plurality of perforations in each projection, means for pivotally connecting the blade to the receptacle at the lower rear extremity thereof, -an adjustable sto secured to the rear of the receptacle and) adapted to engage the scraper blade to limit the upward movement of the same about its point of pivotalconnection Whereby the depth of cut of 'the blade is varied, 120 and runners on the bottom of the blade curved at the rear thereof upon which thc bucket is adapted to rest when it is drawn rearwardly.

4. IA scraper bucket of the class described comprising a scraper receptacle consisting of side plates, reinforcing stripsr at the lower and front edges, the strip at the front edges being bent over at the ends and secured to both of the plates to spacel hem apart, a

.".mcmbers and u turned at the ends with a -their ends, a rear plate connecting the said- -apart in a direction longitudinal of the memplate secured to the rear of the two side plates and additional plates secured to the sides of the receptacle at the rear thereof projecting rearwardly and having perforations in the rearward projections, and a scraper'blade pivotally mounted to the perfoi-ations in said projections. A

5. In a scraper of the class described, a scraper bucket having a pivotally mounted scraper blade, said scraper blade comprising a plurality of separate members curved at members, and a removable scraper blade at the forward end of said members.

6. In a scraper of the class described, a scraper bucket having a pivotally mounted scraper blade, said scraper blade comprising a plurality of members spaced apart and curved at their rearward end, runners secured thereto and extending beyond the members at the forward end, a' rear blade connecting the ends of said members together, a cutter blade disposed at the forward end of said members and connected to the runners, and a strip connected to saidA plurality of per orations in each end spaced bers.

7. In a scraper of the class described, the combination with a scraper receptacle of a pivotally mounted scraper blade connected thereto, runners on the bottom of the blade, and means to draw the receptacle back and forth over the surface to be scraped, the blade being moved into scraping position in one direction of movement and'the receptacle being adapted to slide on the runners in the other direction of movement.

8. In a scraper of the class described, the combination with a 'scraper receptacle'of a scraper blade pivotally connected thereto at one end only, and means for drawing the bucket to and fro over the surfaces to be scraped and for automatically rotating the blade at its pivotal support in accordance with Lthe direction of movement of the receptacle, the blade being operative as. a scraper blade in one direction of movement only and as a runner in the other direction.

9. In a scraper of the class described, the combination with a scraper receptacle of a pivotally mounted scraper blade at the rear of the receptacle, an adjustable stop to engage the blade in one direction of movement, and means to draw the receptacleto and fro over the surface to be scraped and for rotating the blade against the stop into a Vcutting position in one direction of movement only of the receptacle.

10. In a scraper .of the class described7 the.

combination with a scraper receptacle, of'

ward direction of movement.

' 11. In a scraper of the class described, the combination with a scraper receptacle having a pulley mounted on top at the rear thereof, anadjustable scraper blade pivotally mounted at the rear and adjacent `the bottom 'of the receptacle extending rearwardly thereof, an adjustable stop connected to the rear of the receptacle and adapted to engage the blade in one direction of moveinent, runners mounted on the bottom of vhe blade a flexible memberconnected to the rearwardly extending end of the blade and passing over aid pulley, a flexible member connected to the front of the scraper receptacle and to the free end lof the other flexible member, and means to engage the two flexible members and the rear of the cutter blade to move the receptacle to and fro over the surface to be scraped, the cutter blade being rotated in a position to engage the adjustable stop during the forward movement thereof and being rotated in the opposite direction durin the backward movement of the vreceptac e, whereby the rear end of the receptacle will be sup.

ported upon the said runners.

12. In a scraper of the class described, the combination with a scraper bucket of a scraper blade pivotally connected thereto, a flexible member connected to the forward end of the' scraper receptacle, another flexible memberconnected to the rear of the scraper `blade and adjustable to engage the free end of the other flexible member, an adjustable stop to engage the scraper blade to vary the scraping depth thereof, and means to engage the connected ends of the two flexible members and the lrear of the scraper blade to draw the'receptacle` to and fro over the surface to be scraped and to rotate the'scraper blade about its pivotalI sup ort in accordance with the forward and ack movement of the scraper.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 22nd day of January A. D. 1913.

HENRY B. -SAUERMANv 

